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Novel Tracers Created for Hormone Field Studies


The hormone, 17β-estradiol (E2), is a potent endocrine disrupting chemical, produced by all vertebrate animals, including livestock. Part per trillion E2 concentrations can have negative impacts on aquatic organisms, and even small releases from livestock wastes are concerning. Studies have been limited by the inability to discern de novo from previous and uncontrolled inputs of E2.

In an article recently published in the Journal of Environmental Quality, researchers from North Dakota State University and the Red River Valley Agricultural Research Center (USDA-ARS) in Fargo synthesized and evaluated novel E2 tracers for use as E2 surrogates to advance the understanding of E2 fate and transport in field situations.

Three brominated congeners of E2 were synthesized; one having similar soil:water distribution characteristics as native E2. Additionally, this surrogate is easily distinguished from native E2 by HPLC.

Using this novel tracer, scientists will be able to distinguish between current, experimentally-applied E2 and those originating from wildlife or previous animal or municipal waste applications.

Read the full article in JEQ. Free preview Aug 4 - Aug 11